The phrase "ascendancy among" is correct and usable in written English.
It can be used to describe a position of dominance or influence within a particular group or context.
Example: "The company's ascendancy among its competitors has been remarkable over the past few years."
Alternatives: "dominance within" or "superiority over".
Despite his UN success, Mr Abbas will still struggle to restore his and Fatah's ascendancy among his own people.
Tennyson's ascendancy among Victorian poets began to be questioned even during his lifetime, however, when Robert Browning and Algernon Charles Swinburne were serious rivals.
These were soon followed by Odes Modernas (1865), a volume of socially critical poetry that won him an intellectual and moral ascendancy among his fellow students.
Buoyed by America's ascendancy among nations after the Second World War, they projected the confidence of New York as the new world capital of progressive culture.
The ascendancy of Castilian among Spanish dialects is the result of the particular circumstances of the Reconquista (the conquest of Moorish Spain by the Christian states of Spain, completed in 1492), with which the language spread to the south.
Wittes wrote: "the simple truth is that the individual-rights view is in intellectual ascendancy, and not just among gun-loving wing nuts".
C. Maier, Among Empires: American Ascendancy and its Predecessors (Harvard University Press, 2006), Journal of Colonialism and Colonial History 8 2 (2007).
English critics may lament the London theater's fall from imperial grace, bemoaning a lack of revitalizing young blood among audiences, the ascendancy of celebrity over artistry and the perceived commercial crassness and conservatism of the National Theater under Trevor Nunn.
On the accession of the 14-year-old Francis II to the French throne in 1559, the Guise family gained ascendancy in the government, creating enmity among the smaller nobility.
But in the 1970s male actors didn't necessarily earn the juiciest parts for going deep on the little things, as suggested by the ascendancy of Mr. De Niro, Jack Nicholson, Al Pacino, James Caan and Dustin Hoffman, among others, who had nuance but also volume.
The replacement of a Democratic governor with one from the rival National Republican party caused a great deal of angst among Democrats, but the ascendancy of Democrat James Guthrie to president of the state senate and Morehead's willingness to retain Breathitt's secretary of state, Lewis Saunders, did much to allay their fears.
